WO2000036455A1

WO2000036455A1 - Eyeglasses temple connecting structure

Info

Publication number: WO2000036455A1
Application number: PCT/JP1998/005675
Authority: WO
Inventors: Isao Utsumi
Original assignee: Utsumi Optical Products Inc.
Priority date: 1998-12-16
Filing date: 1998-12-16
Publication date: 2000-06-22
Also published as: AU1682099A

Abstract

A structure for hinge-coupling an eyeglasses temple (10) through a spring (21) to a lens side stationary portion (14) such as a front frame. Mounted on the lens side stationary portion is a cylinder block (15) which has a cylindrical space (16) therein and an opening (19) that is made by cutting a part of a circumferential wall surface defining the cylindrical space (16). The spring (21) is a wire-like spring with one end set free, which passes through the cylindrical space at a portion where it extends overlapping the opening of the cylinder block. Inserted into the cylindrical space of the cylinder block is a rotatable pin (17) from which the temple (10) extends. The pin has its outer circumferential surface formed with a first groove (22) and a second groove (23) with which the wire-like spring engages at a first rotary position and a second rotary position, respectively. When the pin is at the first rotary position, the temple is at an open position. When the pin is at the second rotary position, the temple is at a closed position.

Description

Description Technical structure of eyeglass vine connection

The present invention relates to a structure in which a vine of a mirror is hinged to a lens-side fixed portion such as a front frame, and more particularly to a structure in which a vine is connected to a fixed portion via a spring. Background art

In general, the connection between the front frame and the vine is connected by hinges to allow the pivoting movement to open and close the vine. If the hinge is connected only by hinges, and the temple is overextended beyond the pivoting range, permanent distortion will occur in the fixed part of the front frame. Deformation of the glasses impairs the feeling of wearing and is very uncomfortable for the user.

In particular, when removing the glasses that you are wearing, holding both vines with both hands and pulling the glasses straight ahead of the face will not distort the glasses, but in most cases, holding one vine with one hand It is often used to pull diagonally forward. By pulling one side diagonally, the other side will often widen the connection to the front frame beyond the pivoting range. If the eyeglasses are repeatedly removed by one-handed movement many times, permanent distortion gradually accumulates and grows larger, and a feeling of unpleasant wearing for the user increases.

In order to avoid the distortion that causes such discomfort, a structure has recently been adopted in which these parts are connected via a spring between the fixed part on the frame side and the stake. In this spring connection structure, as shown in FIG. 4, one end of a hinge 42 is fixed to the fixed portion 41 on the frame side, and one end of a coil spring 43 is connected to the other end of the hinge 42: Coil The spring 43 is connected to the vine 44 at the other end. A cover 45 is attached to the side surface of the vine 44 so as to cover the coil spring 43. That is, the vine 44 and the cover 45 form a sheath-shaped space therebetween, and the entire coil spring 43 is housed in the space and cannot be seen from outside the cover 45. Connected to coil spring 4 3 The end of the hinge 42 is also inserted into the space, and the tip 46 of the cover 45 contacts the fixed side portion 47 of the hinge 42. The fixed side part 47 is provided with a guide for the cover 45 so that the tip 46 of the cover 45 moves along when the temple 44 pivots between the open and closed positions. In the open position (position shown in the figure) and closed position of the temple 44, the extension length of the coil spring 43 becomes the shortest and the shape is stable. That is, the distance from the pivot axis 48 of the hinge 42 to the contact point between the tip 46 of the cover 45 and the fixed-side portion 47 becomes the shortest at the open and closed positions of the temple 44, It is larger than the shortest distance between the position and the closed position.

Also, the movable range of the pivoting operation of the hinge 42 extends from the closed position to the open position, and further extends to a position extended beyond the open position. At the position extended beyond the open position, the extension length of the coil spring 43 becomes longer than that at the open position, and a force acts to return the temple 44 to the open position.

With the spring connection structure configured as described above, when the user opens and closes the temple 44, the temple 44 is stabilized in the open position in the worn state and the closed position in the stowed state by the elastic force of the coil spring 43. I do. In addition, when the user removes the glasses with the one-handed movement described above, even if one of the temples 44 is spread beyond the open position, the temporary movement of the spread is caused by the extension of the coil spring 43. It is allowed, and is returned to the correct open position by the elastic force of the coil spring 43 and stabilized. Therefore, permanent distortion that impairs the feeling of wearing does not occur on the fixed side of the front frame.

By the way, in the connection structure using the coil spring and the cover as described above, since the coil shape of the coil spring takes a relatively large space, the cover covering the periphery thereof also becomes large, and the eyeglasses, particularly the temple, are hinged. This is a major obstacle to achieving slimming down. Disclosure of the invention

Accordingly, a main technical problem to be solved by the present invention is to achieve a slim structure of a structure in which a vine is spring-connected to a fixed side portion such as a front frame of eyeglasses.

The vine connecting portion structure of the eyeglasses according to the present invention is attached to a lens side fixing portion of the eyeglasses, A cylinder block having a cylindrical space therein and having an opening with a part of a peripheral wall defining the columnar space being cut out, and a portion extending over the opening of the cylinder block. A linear spring having one free end so that it can pass through the cylindrical space and be elastically deformed radially outward of the cylindrical space; and inserted into the cylindrical space of the cylinder block. A pin having a substantially cylindrical outer peripheral surface so as to be rotatable against the elastic pressing force of the linear spring; and a boss having one end attached to the pin and extending from the pin. And, on the outer peripheral surface of the pin, a first concave portion and a second concave portion with which the linear spring is engaged at the first rotational position and the second rotational position in the cylindrical space of the cylinder block are formed. The vine is in the open position when the pin assumes the first rotational position, and the vine is in the closed position when the pin assumes the second rotational position.

The above-described structure in which the linear spring is assembled to the cylinder block has a simpler structure than the structure in which the coil spring and its force bar are combined, and achieves slimness in the vine spring connection structure.

The lens-side fixed portion has an extended portion that extends rearward from the cylinder block, and the cylindrical portion of the cylinder block extends in the cylindrical space until the temple comes in contact with the extended portion. Preferably, the pin can rotate beyond the first rotational position.

With this configuration, even when the spectacle user removes the spectacles with one hand and removes the spectacles, permanent strain does not accumulate on the vine or the fixed portion on the lens side, and the user feels uncomfortable wearing. It will not be accompanied.

Further, it is preferable that the lens-side fixed portion is formed of a linear material, and a free end of the linear material constitutes the linear spring.

Further, it is preferable that the first concave portion and the second concave portion have a groove shape along the longitudinal direction of the linear spring. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an exploded perspective view illustrating an example of a vine connecting portion structure of glasses according to the present invention. Fig. 2 is an enlarged view of the cylinder block and pin in the vine connection structure of Fig. 1. It is an exploded perspective view shown.

FIG. 3 is an exploded perspective view showing another example of the vine connecting portion structure of the glasses according to the present invention. FIG. 4 is an exploded perspective view showing an example of a vine connection structure using a conventional spring connection structure. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 shows the structure of a connecting portion of a pair of eyeglasses according to the present invention. The spectacles in this embodiment are frameless spectacles without front frames (rimless spectacles), and a bridge (not shown) is directly screwed and connected between the two lenses, as is well known. The temples 10 are also directly attached to the respective lenses 13 with screws 11 and nuts 12 as shown.

The lens-side fixed portion 14 is attached and fixed to the lens 13 in order to hinge-connect the temple 10. The fixing portion 14 is formed by bending a stainless steel wire having a diameter of about 1 mm as shown in the figure, and one end thereof is connected to one end surface of the cylinder block 15 (an end surface on the rear side indicated by an arrow A in the figure).鎩 is attached.

As shown in FIG. 2 in an enlarged manner, the cylinder block 15 has a concave portion 16 whose one end face (the lower end face in the figure) is opened to form a cylindrical space therein. A pin 17 having a cylindrical outer peripheral surface is inserted into the concave portion 16 so as to be rotatable therein. One end of a temple 10 is attached to an end face of the pin 17 as shown in FIG.

A notch 18 with a depth reaching the inside of the cylindrical recess 16 from the outside is formed on the end of the cylinder block 15 opposite to the end where the fixed part 14 is attached. As shown in FIG. 2, an opening 19 is formed at the bottom of the notch 18 at substantially the center thereof and reaches the inside of the cylinder block 15.

In the notch 18, the free end 20 of the lens-side fixing part 14 made by bending a stainless steel wire is along the bottom as shown in Fig. 1, and part of it overlaps the opening 19. By passing through the space of the cylindrical recess 16, a cantilever-shaped linear spring 2 1 is formed: that is, the linear spring 21 is formed of a pin 17 inserted into the recess 16. When pushed out by the outer peripheral surface, it can be elastically deformed. The linear spring 21 fits into the cylindrical outer peripheral surface of the pin 17 at two positions where the pin 17 contacts the linear spring 21 with the pin 17 inserted into the recess 16 of the cylinder block 15. Two concave grooves 22 and 23 are formed so as to be inserted. The first groove 22 and the second groove 23 are located at positions where the pin 17 is rotated by approximately 90 ° in the cylinder block 15, and the linear springs 21 respectively extend along the longitudinal direction thereof. It is separated on its cylindrical outer peripheral surface so as to fit. That is, when the temple 10 of the glasses is closed, the spring 21 fits into the first groove 22, and when the temple 10 is opened and worn, the spring 21 fits in the second groove 23. Put in. The position of the hang 10 is stabilized with the spring fitted in each groove. Between the open and closed positions of the vine 10, the linear spring 21 is pushed out by the outer peripheral surface of the pin 17, and the vine 10 becomes unstable in its position and shifts to the stable open or closed position. Given the tendency to try.

The lens-side fixing portion 14 made by bending a stainless steel wire has an extension portion 24 extending rearward from the cylinder block 15, and the extension portion 24 has a thread 10. Until the pin 17 hits, the pin 17 can rotate in the recess 16 of the cylinder block 15. That is, the linear spring 21 can further spread outward beyond the above-described open position where it fits in the second groove 23. Therefore, even if the user removes the eyeglasses with one-handed operation, no permanent distortion is accumulated in the temple 10 or the fixed portion 14 on the lens side, and the user does not feel uncomfortable wearing.

In order to show the approximate size of the actual vine connection structure, the size and shape of the cylinder block 15 are shown as an example, with a length of about 4 mm, a width of about 4 mm, and a height of about 4.5 mm. It has a shape close to a cube, and has a cylindrical recess 16 with a diameter of about 3 mm and a depth of about 4 mm in the center. The stainless steel wire forming the lens-side fixed portion 14 and the linear spring 21 has a diameter of about 1 mm. In this way, if a linear spring is adopted without using a coil spring for the spring connection, the structure of the spring itself will be simpler, and a cover that covers the coil spring will not be needed, making the connection structure slimmer. Is achieved. In the above, the case of frameless eyeglasses has been described as an embodiment of the present invention. However, as shown in FIG. 3, ordinary eyeglasses having a front frame 31 also include a cylinder block 32 and pins 33, and a linear spring 34. And the same structure using. In that case, the lens-side fixed part 35 attached to the frame Attach the one end of the linear spring 34 to the fixed part 35 or the cylinder block 32 itself by attaching, for example, and attach the other free end to the cylinder block. It may be arranged so as to be along the bottom of the notch 32 in FIG. Industrial availability

INDUSTRIAL APPLICABILITY As described above, the present invention is suitable for use in a structure of a part where a vine of a mirror is hingedly connected to a fixed part on the lens side via a spring.

Claims

The scope of the claims

1. An opening (1 9) which is attached to the lens-side fixed portion (14) of the eyeglasses, has a cylindrical space (16) inside thereof, and has a part of a peripheral wall defining the cylindrical space cut out. ) With a cylinder block (1 5);

One end of the cylinder block (15) has one end which extends through the opening (19) of the cylinder block (15) so as to pass through the cylindrical space and elastically deform radially outward of the cylindrical space. A linear spring (2 1) with a free end;

It has a substantially cylindrical outer peripheral surface that is inserted into the cylindrical space of the cylinder block (15) and can rotate against the elastic pressing force of the linear spring (21). Pins (1 7) and

A vine (10) having one end attached to the pin (17) and extending from the pin;

The linear spring (21) is engaged with the outer peripheral surface of the pin (17) at the first rotational position and the second rotational position in the cylindrical space of the cylinder block (15). A first recess (22) and a second recess (23) are formed,

When the pin (17) assumes the first rotational position, the temple (10) is in the open position, and when the pin (17) assumes the second rotational position, the temple (10) is in the open position. A vine connecting portion structure for eyeglasses, which is in a closed position.

2. The lens-side fixed portion (14) has an extension (24) extending rearward from the cylinder block (15), and the extension (24) is attached to the extension (24). The vine connection according to claim 1, wherein the pin (17) can rotate beyond the first rotational position in the cylindrical space (16) of the cylinder block (15) until the が) hits. Part structure.

3. The eyeglass vine according to claim 1, wherein the lens-side fixing portion (14) is formed of a strip material, and a free end of the wire material constitutes the linear spring (21). Connection part structure.

4. The vine connecting part structure for eyeglasses according to claim 1, wherein the first concave portion (22) and the second concave portion (23) have a groove shape along a longitudinal direction of the linear spring (21).